Answer:
Step-by-step explanation:
23
Answer:
Step-by-step explanation:
Given that 97 cities were surveyed to determine sports teams. 25 had soccer, 24 had rugy, 21 had basketball, 12 had soccer and rugby, 11 had soccer and basketball, 12 had rugby and basketball, and 5 had all three.
a) Only rugy team =5
b) Soccer and rugby but not basket ball = 7(green shaded in the diagram)
c) Soccer or rugy = 25+24-12= 37
d) soccer or rugby, but not basketball=37-(6+5+7) = 19
e) Exactly two teams = 7=7+6 = 20
f) Atleast two teams = 7+5+6+7 =25
g) Atleast one team = Total - no team = 40
h) No teams = 91-40 = 51
Answer:
- Elanor's standardized score is 1.19
- Gerald's standardized score is 0.72
- Elanor has higher score
Step-by-step explanation:
To compare Elanor's and Gerald's math scores, we need to standardize them and calculate their z-scores.
z score can be calculated using the formula
z=
where
- M is the mean score of the exam
- s is the standard deviation of the exam
Elanor's standardized score is:
z(e) =
≈ 1.19
Gerald's standardized score is:
z(g)=
≈ 0.72
Since z(e) > z(g), Elanor has higher score
Area of the triangle,
A = bh / 2 = (10 mm)(9 mm) / 2 = 45 mm²
Since there are 2 triangles, their total area is 90 mm².
Then, the area of the sides are,
3A = (3)(10 mm)(18 mm) = 540 mm²
The total area is equal to 585 mm².